[CA] E-80 MFD Time issues

hello! I have an E-80 MFD. My 125 GPS antenna failed and I had to replace it with a 130. Also needed he controller and new cable to link to older Seatalk communication network. The problem of no position, wind, and current data was solved but the time on the MFD alternates between local and GMT every few seconds. Has anyone had this issue? And, what did you do to solve it?

Thank You
Charles